Comments on: How to retrofit automobiles with halogen bulbs with high intesity discharge system

on 10/26/2006 The word "retrofit" doesn't just refer to cutting a parabolic reflector type headlight casing to fit a projector lens/body into it, but also to converting halogen bulb lighting to high intensity discharge.

You do not "simply replacing the bulb" when you retrofit a car with HID. You have to consider wiring for the ballast, relays, signal wire (for the relay, not the clicker) and power wire to the battery. What YOU are referring to is modifying the headlight assembly which is usually done in poor workmanship e.g. leaky insert, distorted beam pattern, poor alignment, etc. and has nothing to with retrofitting the high intensity discharge lighting.

You may be aware, there are two types of headlights found in automobiles: projector and parabolic reflector types. HID lighting can be used in BOTH projector and reflector headlights (e.g. First gen Acura TL used reflector type HID, current gen Acura TL uses projector type.) HID lighting can be retrofit into both types and doesn't require "retrofitting" projectors into parabolic reflector headlight casings.

on 10/16/2006 this is NOT a retrofit, a retrofit is where you take the projector assembly and modify the existing assembly to insert the entire projector into the existing glass casing. This is just simply replacing the bulb.